/Engine/Source/Runtime/ApplicationCore/Public/GenericPlatform/GenericPlatformInputDeviceMapper.h
Callback for when FCoreDelegates::OnUserLoginChangedEvent is broadcasted. If the user has logged out, then remap any input devices that the user had to the "Unpaired" user on this platform (if bUnpairInputDevicesWhenLoggingOut is true)
virtual void OnUserLoginChangedEvent ( bool bLoggedIn, int32 RawPlatformUserId, int32 UserIndex )